I agree, outdoors in strong daylight there is flare. A good hood really helps. OTOH, my multicoated pentax lens always fared a bit better.
In the studio, unless you were shooting into a bright light.. probably wouldn't notice it. I still like the look of my non-t lens and use it. Well, it's the only one I own.
As far as the lens shutter and aperture linkage. Yes, it's awkward. I got used to it pretty quickly. I actually prefer it at this point, especially with a meter that reads in EV's. It's quick.
I'd imagine the newer lenses are nicer to use. They sure look nice.